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Transcript of FRICK QUANTUM™ LX COMPRESSOR CONTROL PANEL · operation frick® quantum™ lx compressor control...

  • OPERATION

    FRICK QUANTUM LXCOMPRESSOR

    CONTROL PANELVersion 7.1x

    Form 090.020-O (JANUARY 2014) OPERATION

    File: SERVICE MANUAL - Section 90Replaces: 090-022 O (JULY 2012)Dist: 3, 3a, 3b, 3c

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    TABLE OF CONTENTS

    SECTION 1INTRODUCTION TO THE QUANTUM LX CONTROL SYSTEM....................................................................................................5

    The Frick Quantum LX CONTROL PANEL....................................................................................................................................5

    Using A Web Browser (Ethernet)........................................................................................................................................6

    Operator Access and Data Entry...........................................................................................................................................7

    Operator Access.........................................................................................................................................................7

    Data Entry...................................................................................................................................................................7

    SECTION 2

    SCREEN AND MENU NAVIGATION........................................................................................................................................9

    Keys and Key Functions...........................................................................................................................................................10

    Menu Structure.......................................................................................................................................................................11

    SECTION 3

    OPERATING DISPLAY SCREENS...........................................................................................................................................13

    OPERATING STATUS (HOME).........................................................................................................................................14OPERATING VALUES

    Sequencing......................................................................................................................................................................18User Defi ned Operating Status.........................................................................................................................................21Vyper

    Vyper.....................................................................................................................................................................22Harmonic Filter..........................................................................................................................................................22Coolant Safeties........................................................................................................................................................23

    MODES...................................................................................................................................................................................24SAFETIES

    Current Safeties................................................................................................................................................................25Safety History...................................................................................................................................................................26

    SYSTEM STATUSTrending

    Trending Setup..........................................................................................................................................................27Real Time Trending....................................................................................................................................................28History Trending........................................................................................................................................................29Real Time Data Log...................................................................................................................................................30History Data Log........................................................................................................................................................31Maintenance.............................................................................................................................................................32Event Log..................................................................................................................................................................33VSD Energy Savings..................................................................................................................................................34kWh Monitoring........................................................................................................................................................35

    SETPOINTSCapacity Control...............................................................................................................................................................36Sequencing - System 1 (2 and 3) Setup..................................................................................................................................39Compressor Safeties........................................................................................................................................................40Package Safeties..............................................................................................................................................................43Motor

    Constant Electric Drive..............................................................................................................................................46VFD, Vyper.............................................................................................................................................................48DBS...........................................................................................................................................................................50

    Capacity Position..............................................................................................................................................................52Miscellaneous...................................................................................................................................................................53Scheduling........................................................................................................................................................................55Condenser Digital Control.................................................................................................................................................56

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    Condenser Analog Control...............................................................................................................................................57PHD Monitoring................................................................................................................................................................58PID Setup.........................................................................................................................................................................60EZ Cool LIOC Setup...........................................................................................................................................................63Separator Condensing......................................................................................................................................................65Superheat........................................................................................................................................................................66Discharge Butterfl y Valve.................................................................................................................................................68Economizer Butterfl y Valve..............................................................................................................................................69Control Oil........................................................................................................................................................................70Recip...............................................................................................................................................................................71

    AuxiliariesAnalog Inputs Page 1..............................................................................................................................................72Analog Inputs Page 2..............................................................................................................................................73Digital Inputs.............................................................................................................................................................74Digital Outputs..........................................................................................................................................................75Timed Digital Outputs................................................................................................................................................77

    Panel................................................................................................................................................................................78CALIBRATION

    Pressure...........................................................................................................................................................................80Temperature.....................................................................................................................................................................81Capacity/Volume..............................................................................................................................................................82Motor/Miscellaneous........................................................................................................................................................83PHD Monitoring................................................................................................................................................................84Analog Outputs

    Retransmitting Outputs.............................................................................................................................................85VFD/Condenser Analog Outputs.................................................................................................................................86Analog Output Calibration.........................................................................................................................................87Auxiliary Analogs Page 1........................................................................................................................................89Auxiliary Analogs Page 2........................................................................................................................................90

    CONFIGURATIONCompressor......................................................................................................................................................................91Communications..............................................................................................................................................................93Ethernet...........................................................................................................................................................................95Security............................................................................................................................................................................97

    SESSION.................................................................................................................................................................................98SERVICE

    Digital..............................................................................................................................................................................99Analog............................................................................................................................................................................100Communications Log......................................................................................................................................................101ModBus TCP Log.............................................................................................................................................................102Motor Bump....................................................................................................................................................................103Communications Loop Back Test....................................................................................................................................104Diagnostics.....................................................................................................................................................................105Software Maintenance...................................................................................................................................................106

    DOCUMENTATION..................................................................................................................................................................107HELP......................................................................................................................................................................................108ABOUT..................................................................................................................................................................................109MISCELLANEOUS SCREENS

    ALPHA............................................................................................................................................................................110

    SECTION 4OPERATION OVERVIEW....................................................................................................................................................111

    Initial Setup Procedure...........................................................................................................................................................111Compressor Start-Up Procedure............................................................................................................................................111Compressor Stopping Procedure............................................................................................................................................111Setup For Automatic Control..................................................................................................................................................111

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    Remote Control Of The Compressor......................................................................................................................................112

    SECTION 5WARNINGS/SHUTDOWNS MESSAGES................................................................................................................................113

    SECTION 6APPENDIX........................................................................................................................................................................127

    OIL SAFETY LOGIC..................................................................................................................................................................127Part 1: Missing Oil Pressure.............................................................................................................................................127Part 2: Insuffi cient Main Oil Pressure During Low Differential.................................................................................................128Part 3: Oil Circuit Pressure Drop......................................................................................................................................129Part 4: Oil Pressure Filter Drop.......................................................................................................................................130

    OIL PUMP STARTING LOGIC....................................................................................................................................................131No Pump.........................................................................................................................................................................131Demand Pump................................................................................................................................................................132

    OIL PUMP RUNNING LOGIC.....................................................................................................................................................132Demand Pump................................................................................................................................................................132

    OIL PUMP STARTING LOGIC....................................................................................................................................................133Full Time Pump..................................................................................................................................................................133

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    SECTION 1

    INTRODUCTION TO THE QUANTUM LXCONTROL SYSTEM

    COMPRESSOR WITH QUANTUM LX CONTROL PANEL

    THE FRICK QUANTUM LX CONTROL PANEL

    Frick Compressor packages may be used individually, or in groups. This section will describe some of the various con-fi gurations that may be used with regard to electrical control.

    Each individual Compressor unit is controlled by a computer based machine control system, known as the Quantum LX control panel. This controller continuously monitors the con-ditions and operation of the compressor unit and the various subsystems. It also directs the operation of components. It is fully self-contained.

    The Quantum LX control panel user interface is used to display graphic screens, which represent various aspects of compressor operation. By pressing a key on the keypad, the labeled or described function is recognized by the control pro-cessor, and appropriate action is taken.

    Although the primary means of operator interaction to the compressor package is via the built-in Quantum LX con-trol panel, there are two additional methods that emulate the graphic control screens that may be used remotely for com-pressor control. The following information is presented to help the operator interact with these graphic screens.

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    USING A WEB BROWSER (ETHERNET)

    The Quantum LX Compressor interface may be ac-cessed from any web browser. This feature allows any screen to be viewed from a remote location without spe-cialized software. An Ethernet connection to the Quan-tum LX panel must be provided to utilize this feature.

    The web browser interface can be viewed from any desktop or laptop computer, which has access to the network that the Interface panel is attached to.

    Access the Ethernet Confi guration screen at the Interface Pan-el, by selecting [Menu] > [Confi guration] > [Ethernet]. The following screen will be shown:

    Note the values that are displayed in the four boxes of the IP Address.

    At the computer, open the Internet browser (click on your In-ternet icon). Once the browser has opened, look for the ad-dress bar, it will appear similar to the following: On the address bar, type the following [ http:// ]. Do not type the brackets. After the http:// type in the values of the four boxes from IP Address of the Ethernet Confi guration screen. Place a period (dot) between each group of numbers. Using the screen information example used here, the result would be http://192.168.0.252. Your particular IP Address may vary from the example shown.

    Press the [Enter] key on your computer keyboard, and if everything is connected and confi gured properly, the Home screen of the Interface Panel should now appear on your com-puter screen (similar to the following):

    If you experience problems, such as a message stating Page not found, consult with your IT department.

    To change screens, setpoints, etc., you simply use a mouse and the keyboard to view and change data.

    All Interface screens will have several buttons on the right hand side of the screen:

    [Menu] Clicking on this button will cause the main menu to appear on the left side of the screen. Clicking a second time will cause the menu to disappear.

    [Submit] Although this button does not appear in the example above, it will be present on most screens. It is used any time that you have modifi ed a setpoint, or made any change to a screen. Before leaving that screen, you must press the [Submit] button for the changes to be saved.

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    OPERATOR ACCESS AND DATA ENTRY

    OPERATOR ACCESS

    Operator access to this system is through various screens. A screen is the physical representation of data on the dis-play. Each screen has a title area. The title is descriptive of the screen. The current date and time is shown in this title area. The day of the week, Sunday (Sun.) through Saturday (Sat.) is displayed. The month of the year from January (Jan.) to December (Dec.) is displayed. The day of the month from 1 to 31 and the year from 0001 to 9999 is displayed. The time displayed is the current time in 24 hours (military) format. The hours, minutes and seconds are displayed.

    Some screens are for informational purposes only, and cannot be modifi ed. These screens typically show analog values such as temperature and humidity, which are strictly functions of an associated sensor, and as such, cannot be modifi ed. Other screens show setpoint values which can be changed, in order modify the units operating characteristics. For easier viewing, related information is separated into boxes. Sometimes selec-tions are hidden when that the feature is unavailable.

    DATA ENTRY

    The setpoints defi ne the operation and limits of each unit. These setpoints can be changed by operators in the fi eld, and are stored on the Compact Flash card.

    NOTE: Setpoints are not lost after power is interrupted. However, we suggest that a list of setpoints be recorded and stored safely to facilitate reentry, in case there is a need to return to the original settings.

    1. The data entry fi elds are identifi ed by a black box with a white interior. The data is shown in black text. When on a screen that has adjustable setpoints, tab to the setpoint box that you wish to modify (or se-lect it on a web browser).

    2. The current value of that setpoint is shown. Use the keypad to enter the new value. Typing a new value will completely erase the old value. 3. Press the keypad [ENTER] or [Tab] key to input the new data in the data entry fi eld and to move to the next data entry fi eld.

    4. If the data entered into the setpoint box is valid, press the keyboard [ENTER] key. After all the set-point changes on this screen have been entered, press the [SUBMIT] button to save the setpoint changes to memory.

    5. If the value is out of bounds, an error message box displays the proper range of values. Press the [OK] button to acknowledge the error message. Re-enter a correct value.

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  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    SECTION 2

    SCREEN AND MENU NAVIGATION

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    KEYS AND KEY FUNCTIONS

    Key Function

    DECIMAL [.] - This key is used when entering a decimal value in a data fi eld.

    + +/-[+/-] - When changing a value in a data fi eld, this key toggles the value between negative and positive.

    [BACKSPACE] - Pressing this key will cause the current location of the cursor to backup one position per key depression. When changing a value in a data fi eld, this key will delete the selected character.

    [UP ARROW] - Provides upward navigation within the MAIN MENU window.

    [TAB] - When in the mode of chang-ing setpoints, pressing this key will cause the cursor to jump to the next data entry fi eld.

    [LEFT ARROW] - When in the mode of changing setpoints, this key is used to go to the previous data en-try fi eld. When the MAIN MENU is shown, pressing this key will cancel the window.

    [DOWN ARROW] - Provides down-ward navigation within the MAIN MENU window.

    [RIGHT ARROW] - When in the mode of changing a data entry fi eld, this key is used to go to the next character.

    [ENTER] - When changing data in a data entry fi eld, this key will accept the change. This key is also used to select items on Menu Windows.

    [SUBMIT] - After changing a set-point value, Use this key to enter (submit) the change.

    [MENU] - Shows the MAIN MENU window. This window shows the main selections for accessing information, setup of options, and setpoint entry.

    The following is a list of the labeled keypad keys and the ac-tions that occur when they are pressed:

    Key Function

    [STOP] - When the compressor is running in Manual Mode, pressing this key immediately stops the com-pressor by placing it into Stop Mode. The compressor is stopped regard-less of any other conditions.

    [START] - When in Manual Mode, this key places the compressor unit into the Start Mode for running.

    [UNLOAD VALUE] - Unloads Capac-ity.

    [LOAD VALUE] - Loads Capacity.

    [ALARM SILENCE] - Immediately si-lences a sounding alarm and turns off the alarm annunciation device that is connected to this panel.

    [MANUAL] - Changes the compres-sor mode from its current mode to its previous Mode.

    7 8 9

    4 5 6

    1 2 3

    0

    NUMERALS [0] - [9] - The numerical keys are used to enter a value in a data fi eld.

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    MENU STRUCTURE

    HomeOperating Values...ModesSafeties...System Status...Setpoints...Calibration...Configuration...SessionService...HelpAbout

    SequencingUser DefinedVyper...Vyypep r...

    CurrentHistory

    VyperHarmonic FilterVyper Coolant Safeties

    History

    Trending...MaintenanceEvent LogVSD Energy SavingskWh Monitoring

    Trending SetupReal Time TrendingHistory TrendingReal Time Data LogHistory Data Log

    PressureTemperatureCapacity/VolumeMotor/MiscellaneousPHDAnalog Outputs...Auxiliaries...AuAuxixililiararieiess...

    CompressorCommunicationsEthernetSecuritySeSecucurirityty

    DigitalAnalogCommunications LogMotor BumpDBS Fault HistoryCommunications Loop Back TestDiagnosticsSoftware Maintenance

    Retransmitting OutputsVFD / Condenser Analog OutputsOutput CalibrationOutput Calib

    Page 1Page 2

    System 1 SetupSystem 2 SetupSystem 3 SetupSequencing ControlSeSeququene cic ngg CCono trt olo

    Condenser Digital ControlCondenser Analog Control

    Historo y y Daata Lo

    System 1 Setu

    Mode 1Mode 2Mode 3Mode 4

    Condenser A

    Page 1Page 2

    kWh Monitoringg

    Pressure

    Capacity...Sequencing...CompressorPackageMotorCapacity PositionCondenser...MiscellaneousSchedulingPHD MonitoringPID Setup...EZ Cool LIOCSeparator CondensingSuperheatDischarge Butterfly ValveEconomizer Butterfly ValveControl OilAuxiliaries...Panel

    Page 1Page 2Page 3Page 4

    Analog Inputs...Digital InputsDigital OutputsTimed Digital Outputs

    The above graphic represents the menu structure, or tree, of the Quantum LX screens. Use this tree when accessing the various screens. Please note that this screen list is complete and that certain screens may not be available as shown here, depending upon the enabled op-tions.

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  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    SECTION 3

    OPERATING DISPLAY SCREENS

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    OPERATING DISPLAY SCREENSOperating Status (Home)

    ACCESSING: Home

    DESCRIPTION: This is the default screen (also called the Home screen). After the Quantum LX has booted, this screen will appear. The most important information about the compres-sor and the applicable subsystems operation is displayed here. This screen is shown when power is fi rst turned on and when a key is pressed after the screen saver has turned off the back-light. The Operating Status screen is continuously updated and provides a variety of information with regard to the current condition and performance of the compressor unit and sub-system.

    The following information is shown on this screen:

    DATE - The actual date will be displayed in this box. The date must fi rst be set correctly on the Confi guration screen. Once set, the date will be automatically adjusted for at the end of each month, much like the calendar fea-ture of most modern watches. The primary use of the date feature is to provide a date stamp for Warnings and Shutdowns.

    TIME - The actual time will be displayed in this box. The time must fi rst be set correctly on the Confi guration screen. The time will also need to be adjusted for those locations which observe Daylight Savings Time. The pri-mary use of the time feature is to provide a time stamp for Warnings and Shutdowns.

    SCREEN TITLE - This is the title for the screen that is showing. Each screen will have a title. The Quantum LX manuals will extensively refer to screens by these names.

    When referred to in these manuals, screen names will be shown in bold italic print, such as Operating Status.

    COMPRESSOR MODEL - This is actually a rotating mar-quee. It will alternately display the model name of the compressor (such as RWF) and will then rotate to show Frick.

    COMPRESSOR RUN STATUS -

    Off Running Starting Stopping Stopping - High Capacity Stopping - Pumpdown Stopping - Cool Down Period

    PROCESS SETPOINT VALUE - This is the control setpoint maintained by the internal capacity control.

    PROCESS ACTUAL VALUE - The actual reading of the pressure or temperature that was chosen as the compres-sor control setpoint is shown here.

    ID - The value shown here is the number that has been assigned to this particular unit on the Communications Setup screen.

    RUN HOURS The value shown here is the total number of hours that the compressor has been actually running,

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    environment where audible alarms may not be heard. Pressing any key on the keypad will clear the fl ashing backlight.

    OIL LUBRICATION DEVICE STATUS BOX - The operating status is shown for the following devices:

    Oil Pump - (If selected in the Confi guration) The On or Off message is shown for the status of the oil pump. The Manual or Auto message is shown to indicate the position of the HAND-OFF-AUTO switch. If dual pump control was en-abled in Confi guration, the lead pump (either Oil Pump 1 or Oil Pump 2) is shown.

    Oil Heater - The On or Off message is shown for the status of the oil separator heater(s).

    MOTOR STATUS BOX - The following items are shown:

    Motor Amps - The actual motor amps is shown.

    %FLA - The percentage of the drive motor full load amperage rating that the motor is currently using: % (FLA x SF)

    Kilowatts - The actual calculation of the kilowatt usage of the compressor motor. It is based on the calculation of KW = (3 x V x A x PF) / 1000.

    Recycle Delay - This message shows the re-maining time in minutes for Recycle Delay. If the compressor has started and shuts down within the recycle time delay setpoint period, the Recy-cle Delay will prevent the compressor from start-ing until the delay time expires. This time delay is intended to prevent damage to the compressor motor from successive restarts.

    Note: The remaining recycle delay time can be cleared from the Motor screen

    COMPRESSOR STATUS BOX - Shows the present oper-ating status of the compressor and from what source it has been initiated:

    Compressor Mode - One of the following messages is shown:

    Manual - A compressor manual start or stop command was sent.

    Automatic - The compressor auto command was sent. The compressor starting and stopping is being controlled from automatic cycling con-trol setpoints at the panel. The automatic cycling control setpoints of the active capacity control are used.

    Remote -- Communications - The compres-sor remote communications command was sent. The compressor starting and stopping is through the serial Com-2 channel.

    during its lifetime.

    CAPACITY/VOLUME - Shows what is presently control-ling the Slide Valve and from what source it was initiated. The following sources may be shown:

    Capacity:

    Manual Automatic Remote -- Communications Remote -- IO Remote -- 4-20 Input Remote -- Sequencing Manual -- Browser

    VOLUME:

    Manual Automatic

    RUN HOURS The total amount of time in hours that the compressor motor has run.

    WARNING/SHUTDOWNS STATUS BOX - The Warning/Shutdowns Status is displayed below the Capacity/Volume status box. This status box is blank with no message if there are no warnings or shutdowns present.

    If a Warning or Shutdown occurs, a fl ashing message will be shown, identifying the type of warning or shutdown. As an example, if the Oil Temperature has been less than or equal to the Low Oil Temperature Warning setpoint for its time delay setting, then a Low Oil Temperature Warn-ing will be shown. If the warning is not cleared by the operator, and the Oil Temperature continues to drop to a point that is less than or equal to the Low Oil Temperature Shutdown setpoint for its time delay setting, then a Low Oil Temperature Shutdown is issued, and the compressor, if running, will stop. The defi nitions for the two types of messages are as follows:

    WARNING - A specifi c warning message fl ashes when a warning is present. A warning is a condition that requires operator acknowledgement but allows the compressor to continue to run if it is already run-ning.

    A Warning message indicates that a warning setpoint has been reached, or exceeded.

    SHUTDOWN - This specifi c shutdown message fl ashes when a shutdown is present. A shutdown is a condition that requires an operator to acknowledge, and causes the compressor to shut down.

    A Shutdown message indicates that a shutdown setpoint has been reached, or exceeded.

    When a Shutdown occurs, the display backlight will fl ash on and off to alert an operator of the shutdown. This visual alarm will help get the at-tention of the operator in a noisy engine room

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    Remote -- IO - The compressor remote I/O command was sent.

    Remote -- Sequencing - The compressor re-mote sequencing command was sent.

    Note: If there is a shutdown in response to a safety setting, a compressor in Remote or Automatic mode is placed into Manual mode requiring operator inter-vention.

    Start Status - One of the following messages is shown:

    Ready - The Compressor is ready to start.

    Start Inhibit In Shutdown - The Compressor is not able to start due to Shutdown condition that is currently present. Once the Shutdown condi-tion has been resolved, and the Shutdown has been cleared, a Start command will be required once the unit is in Ready status.

    Start Inhibit In Recycle Delay - The Compressor is not able to start because the Compressor Re-cycle Delay time is timing out. After the Recycle Delay has timed out, a Start command will be required once the unit is in Ready status.

    Start Inhibit High Discharge Temperature - The Compressor is not able to start because the Discharge temperature is above its Shutdown setpoint. A Start command is required when in the unit is in Ready status.

    Start Inhibit High Oil Temperature - The Com-pressor is not able to start because the Oil tem-perature is above its Shutdown setpoint. A Start command is required when in the unit is in Ready status.

    Start Inhibit Low Separator Temperature - The Compressor is not able to start because the Sep-arator temperature is below its Shutdown set-point. A Start command is required when in the unit is in Ready status.

    Start Inhibit Slide Valve Too High - This will set the Compressor Run Status to Starting status and then transition to Running when the Slide Valve is below the Highest Capacity To Permit Starting setpoint.

    Start Inhibit Still In Prelube - A Start command has already been sent. The Compressor Run status is Starting and will transition to Running when the oil pump pre-lube is complete.

    Start Inhibit High Suction Pressure - The Com-pressor is not able to start because the Suction pressure input is at its high end of the sensor range. A Start command is required when in the Ready status.

    Start Inhibit High Suction/Discharge Differen-tial - The Compressor is not able to start be-cause the Suction/Discharge differential pressure is above the Start Differential setpoint. A Start command is required when in a Ready status.

    Start Inhibit Permissive Start - The Compres-sor is not able to start because the Permissive Start input is off. A Start command is required when in a Ready status.

    Start Inhibit Digital Auxiliaries - This will set the Compressor Run Status to Starting status and then transition to Running if the Digital Auxiliary input is On before the end of the delay time.

    Power Fail Restart - The Compressor is not able to start because the Power Fail Restart is en-abled and its delay timer has not timed out. This only occurs in Compressor Auto Mode. A Start command is required when in a Ready status.

    Start Inhibit Low Oil Pressure - This will set the Compressor Run Status to Starting status and then transition to Running when the Oil Pressure is 10 PSI above the Low Oil Pressure Shutdown setpoint. This is only used with Other Manufac-turer compressor type.

    Running - A Start command has already been sent, and the Compressor is running.

    Start Inhibit In Discharge Pressure Blowdown - The Compressor is not able to start. This is only used on RCSI systems.

    Start Inhibit Separator Condensing - This will

    set the Compressor Run Status to Starting status and then transition to Running when the Separa-tor Condensing setpoint is below the Highest Capacity To Permit Starting setpoint.

    Capacity Control - One of the following messages is shown:

    Mode 1 Mode 2 Mode 3 Mode 4

    SUCTION PRESSURE & TEMPERATURE BOX - The fol-lowing sensor information is displayed:

    Suction Pressure - Is measured at the compres-sor inlet and the value is displayed along with the unit of measure.

    Suction Temperature - Is measured at the com-pressor inlet and the value is displayed along with the unit of measure.

    Superheat - The temperature of the gas at satu-

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

    090.020-O (JAN 14)Page 17

    ration temperature for a given period of time.

    DISCHARGE PRESSURE & TEMPERATURE BOX - The fol-lowing sensor information is displayed:

    Discharge Pressure - Is measured at the com-pressor outlet and the value is displayed along with the unit of measure.

    Discharge Temperature - Is measured at the compressor outlet and the value is displayed along with the unit of measure.

    Superheat - Superheat is the term used to de-scribe the difference between the vapor point (i.e., the temperature at which the refrigerant evaporates at a given pressure) and the actual temperature of the refrigerant exiting the evapo-rator coil.

    OTHER PRESSURES AND TEMPERATURE BOX - The fol-lowing sensor information is displayed:

    Oil Pressure - The Oil Pressure Is measured pri-or to entering the compressor and the value is displayed along with the unit of measure.

    Oil Temperature - The Oil Temperature Is measured prior to entering the compressor and the value is displayed along with the unit of measure.

    Filter Differential - If applicable, pressure drop across the oil fi lter. The main oil in-jection oil fi lter pressure drop value (dif-ferential) is displayed along with the unit of measure.

    Separator Temperature - The Oil Separator Temperature value is displayed along with the unit of measure.

    Process Temperature - If applicable, the Leaving Process Temperature value is dis-played along with the unit of measure.

    Balance Piston - If applicable, the Balance Piston pressure reading is displayed along with the unit of measure. This reading is a measurement of the presence at the Bal-ance Piston.

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    OPERATING VALUES - Sequencing

    ACCESSING: Operating Values Sequencing

    DESCRIPTION: This screen will be available if Sequencing is enabled in Compressor confi guration. This is strictly a status screen; no values can be changed from here.

    The following is a description of the Sequencing strategy:

    Start/Stop

    System Setup:

    Control Input Suction Pressure Control Direction Forward High Stage Link Disabled

    Start Procedure

    Before starting a compressor, the master must de-termine that all running compressors are loaded and that the Suction Pressure has risen to a point where an additional compressor is needed.

    First, the master checks that either no compressors are running or all the running compressors average 90% capacity. If a running compressor is at less than 90% capacity but is in a Load Inhibit or Force Unload condition, for the purposes of this calculation it is as-sumed to be at 90% capacity.

    If all the running compressors are loaded the mas-ter next begins comparing its Suction Pressure to the Autocycle Start setpoint. When the Suction Pressure rises above the Start setpoint, the start timer is initi-ated. If the start timer reaches the Autocycle Start Delay setpoint time and the Suction Pressure has re-

    mained above the Start setpoint for the entire time, the master attempts to start an additional compres-sor. If the Autocycle Start Delay setpoint is 0 min-utes, the master still waits 15 seconds before starting a compressor.

    To determine which compressor to start, the master fi rst sorts all the compressors in the system based on their start number, low to high. If two compres-sors have the same start number, the fi rst one on the list remains ahead of the second. Next, the master starts at the top of the list and works down through list until it fi nds a compressor that is available to run. To be deemed available, a compressor must have good sequencing communications and its Compres-sor Mode and Capacity Mode must be set as Remote Sequencing. In addition the compressor must be off, and it cannot be in a Start Inhibit condition except for the Start Inhibit Slide Value Too High condition. The compressor with the lowest start number that also meets these conditions is then sent a start command. If no compressors are currently available to start, the master will continue checking until one becomes available or until the Suction Pressure drops below the Start setpoint.

    After a compressor has been sent a start command, the master waits for that compressor to reach a Run-ning state. If 3 minutes passes and the compressor has not yet begun to run, the master sends it a stop command. This compressor is then fl agged as Unable to Start for 1 hour. After that time the master may again try to restart the compressor if additional ca-pacity is needed. After a compressor begins running,

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

    090.020-O (JAN 14)Page 19

    or after one fails to start and is sent a stop command, the master can begin the process of starting another compressor.

    Stop Procedure

    If the Suction Pressure drops to a point where one of the running compressors is no longer needed, the master will stop the last compressor in the sequence list.

    When the Suction Pressure drops below the Auto-cycle Stop setpoint, the stop timer is initiated. If the stop timer reaches the Autocycle Stop Delay setpoint time and the Suction Pressure has remained below the Stop setpoint for the entire time, the master at-tempts to stop one of the running compressors. If the Autocycle Stop Delay setpoint is 0 minutes, the master still waits 15 seconds before stopping a com-pressor.

    To select the compressor to stop, the master also sorts all the compressors in the system according to their start number. Then the master starts at the bot-tom of the list and works up, looking for a running compressor that can be stopped. To be selected a compressor must have good sequencing commu-nications and its Compressor Mode and Capacity Mode must be set as Remote Sequencing. In addi-tion, the compressors run time must be greater than the compressors Minimum Run Time setpoint. If the Minimum Run Time setpoint is 0 minutes, a compres-sor can also be stopped if it is still in Starting mode. The compressor with the highest start number that meets these conditions is sent a stop command. If no compressors are currently available to stop, the master will continue checking until one becomes available or until the Suction Pressure rises above the Stop setpoint.

    After a compressor has been sent a stop command, the master waits for that compressor to go to off. If 3 minutes passes and the compressor has not yet turned off, the master then fl ags this compressor as Unable to Stop for 1 hour. After that time the master may again try to stop the compressor. After a com-pressor goes to off or after one fails to stop within 3 minutes, the master can begin the process of stop-ping another compressor.

    Load/Unload

    System Setup:

    Control Input Suction Pressure Control Direction Forward High Stage Link Disabled

    Load Procedure

    If the master compressors Suction Pressure is above the Capacity Control setpoint, the master calculates the increase in capacity that is required. The calcula-

    tion is as follows:

    Difference = Suction Pressure (Capacity Control Setpoint + Upper Dead Band)

    If the Difference is less than the Upper Proportional Band:

    Capacity Change = (Difference / Upper Proportional Band) * Upper Cycle Time

    If the Difference is greater than the Upper Propor-tional Band:

    Capacity Change = Upper Cycle Time

    After the capacity increase has been calculated, the master then fi nds the compressor whose capacity should be changed. To make this determination, the master sorts all the compressors based on their start number. Beginning at the compressor with the lowest start number, the master fi nds the fi rst compressor on the list that is running but is not at its maximum capacity. A compressor is at maximum capacity if it is at 100 percent capacity or if it is in a Load Inhibit or Force Unload condition.

    If the selected compressor is running the Quantum LX software, the capacity increase is added to the compressors current capacity. This new value is then sent to the compressor as its Capacity Command, and that compressor will try to increase its capacity to match the Command value.

    If the selected compressor is controlled by a Quan-tum 1-4 or a Plus panel, the capacity increase is interpreted as the time period for a load pulse and is sent to the compressor as a load command. The slave compressor will then turn on its load output for the given number of seconds.

    Unload Procedure

    If the master compressors Suction Pressure is below the Capacity Control setpoint, the master calculates the decrease in capacity that is required. The calcula-tion is as follows:

    Difference = (Capacity Control Setpoint - Upper Dead Band) Suction Presure

    If the Difference is less than the Lower Proportional Band:

    Capacity Change = (Difference / Lower Proportional Band) * Lower Cycle Time

    If the Difference is greater than the Lower Propor-tional Band:

    Capacity Change = Lower Cycle Time

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    After the capacity decrease has been calculated, the master then fi nds the compressor whose capac-ity should be changed. To make this determination, the master sorts all the compressors based on their start number. Beginning at the compressor with the highest start number, the master fi nds the last com-pressor on the list that is running and whose capac-ity is above its Minimum Capacity setpoint. If two compressors are currently running at or below their Minimum Capacity setpoints, the master will not al-low any additional compressors to unload. This will allow the Suction Pressure to continue to drop and will cause the master to turn off one of the unloaded compressors. If the master sees that only one com-pressor is running in its system, it will continue to unload the compressor down to the masters Auto-matic Capacity Mode Minimum Slide Valve Position setpoint.

    If the selected compressor is running the Quantum LX software, the capacity decrease is subtracted from the compressors current capacity. This new value is then sent to the compressor as its Capacity Command, and that compressor will try to decrease its capacity to match the Command value.

    If the selected compressor is controlled by a Quan-tum 1-4 or a Plus panel, the capacity decrease is interpreted as the time-period for an unload pulse and is sent to the compressor as an unload com-mand. The slave compressor will then turn on its un-load output for the given number of seconds.

    High Stage/Booster

    The High Stage System Link setpoint is provided to tie a system of Booster compressors to a system of High Stage compressors. For example, if the Booster compressors are setup on System #1 and the High Stage Compressors are on System #2, the High Stage System Link setpoint from System #1 would be set as System 2.

    When the Booster Systems master wants to start the fi rst Booster compressor, it fi rst checks that a Boost-er compressor is available to run and then sends a signal to the High Stage Systems master telling it to start a High Stage compressor. If all the High Stage compressors are off, the High Stage Systems mas-ter will start its fi rst compressor, regardless of what the High Stage Control Input is reading. When the Booster Systems master observes that a High Stage compressor is running, it will allow a Booster com-pressor to start.

    After the fi rst High Stage compressor begins to run, compressors in both systems will cycle on and off as their Control Inputs move up and down. The only

    stipulation to the control strategy is that one High Stage compressor must always remain on as long as at least one Booster compressor is running. If all the Booster compressors turn off, the High Stage com-pressor can then turn off as well.

    Establish Sequencing Communications Using An Ether-net Connection

    Perform the following steps on each panel that will be part of the sequencing group:

    From the Main Menu, select [Session].

    At the Session menu, set the User Level to [2], and enter a password of [20], then press [Submit]. This will set the user access to level 2, which is the minimum level needed to access the sequencing feature.

    Next press [Menu] > [Confi guration] and select [Compressor].

    On the Compressor Confi guration screen, tab down to enable [Sequencing], then tab over to [Mode 3] and enable it. Press [Sub-mit].

    Once again select [Menu] > [Setpoints] > [Sequencing] then [System 1 Setup].

    On the [System 1 Setup] screen, tab to Sequencing and [Enable] it. Next set the Control Setpoint to the value that you wish to control to. Set the Minimum Runtime to [10 Min], and set High Stage System Link as [None].

    Now set Sequencing ID #1 as [last octet of 1st Compressors IP address], set the Start # as [1], Compressor and Capacity Modes as [Remote Seq.] and Minimum Capacity as proper value.

    Next set Sequencing ID #2 as [last octet of 2nd Compressors IP address], set the Start # as [2], Compressor and Capacity Mode as [Remote Seq.] and Minimum Capacity as proper value.

    Go to [Menu] > [Modes]. Verify that the Ac-tive Mode is set to either Mode 3 or Mode 4.

    Finally, go to the [Menu] > [Operating Val-ues] > [Sequencing]. Ensure that a status other than not communicating is present for both machines.

    This concludes the Sequencing setup.

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    OPERATING VALUES - User Defi ned Operating Status

    ACCESSING: Operating Values User Defined

    DESCRIPTION: The purpose of this screen is to allow the user to assign additional analog channels to be more readily view-able. Since the main Operating Status screen is capable of only showing a limited number of pre-assigned analog values, it may be desirable for the user to have a method of viewing ad-ditional information that they can select, on a common screen.

    This screen is provided to allow the user to view up to 20 dif-ferent analog channels of their choosing.

    As an example of how this screen works, assume that in addi-tion to the data that is shown on the Operating Status screen, the user would like to monitor the Capacity Slide Position, Auxiliary Analog Channel 1 and Compressor Vibration Suc-tion, all on the same screen (this one). Notice that Capacity Slide Position is already shown on the Operating Status screen, but the user would also like to see Auxiliary Analog Channel 1 and Compressor Vibration Suction on the same screen. In order to set this screen up this way, the user would highlight the Enable User Defi ned Channel 1 (or whatever channel they wish to use), by pressing the [Tab] key. Once the box is high-lighted, use the [Enter] key to cause the possible settings for the channel to appear. Use the arrow keys to scroll through the list. When the selection that you want to use has been highlighted, press the [Enter] key to select it. Once selected, a value will appear to the right of the list, which corresponds to the analog value for that channel.

    The following selections may be shown on this screen:

    Capacity Slide Position Volume Slide Position Suction Pressure

    Discharge Pressure Compressor Oil Pressure Main Oil Injection Pressure Economizer Pressure Filter Pressure Intermediate Pressure Balance Piston Pressure System Discharge Pressure Suction Temperature Discharge Temperature Compressor Oil Temperature Oil Separator Temperature Process/Brine Temperature Leaving Process/Brine Temperature Entering Control Oil Pressure Remote Control Setpoint Motor Current RPM Kilowatts User defi ned analog inputs #1 - #10 EZ Cool Feedback % User defi ned analog inputs #12 - #20 Manifold Pressure Remote Capacity Position Liquid Level Compressor Vibration Suction Compressor Vibration Discharge Motor Vibration Shaft Side Motor Vibration Opposite Shaft Side Motor Temperature Shaft Side Motor Temperature Opposite Shaft Side Motor Stator #1 - #3 None

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    OPERATING VALUES VYPER - Vyperypy

    ACCESSING: Vyper Vyper Operating Values

    OPERATING VALUES VYPER - Harmonic Filter

    ACCESSING: Vyper Harmonic Filter Operating Values

    DESCRIPTION: This screen only appears if a Vyper drive is installed. The screen is used to view and change specifi c oper-

    ating values having to do with the Vyper drive.

    DESCRIPTION: This screen only appears if a Vyper drive is installed. The screen is used to view and change specifi c oper-

    ating values having to do with the Vyper drive.

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    OPERATING VALUES VYPER - Coolant Safeties

    ACCESSING: Vyper Harmonic Filter Operating Values Vyper Coolant Safeties

    DESCRIPTION: This screen only appears if a Vyper drive is installed. The screen is used to view and change specifi c oper-

    ating values having to do with the Vyper drive.

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    MODES

    ACCESSING: Mode

    DESCRIPTION: The purpose of this screen is to allow the user to assign operational states (such as manual or automatic) to the various modes shown on the screen.

    The following pull-down menus are shown here:

    Compressor:

    Manual Automatic Remote -- Communications Remote -- IO Remote -- Sequencing Manual -- Browser

    Capacity:

    Manual Automatic Remote -- Communications Remote -- IO Remote -- 4-20 Input Remote -- Sequencing Manual Browser

    Volume:

    Manual Automatic

    Active Mode:

    Mode 1 Mode 2

    Mode 3 Mode 4

    Pump (if enabled):

    A Pump On/Off indicator (blue text) is provided here to alert the user as to the actual status of the Oil Pump (if applicable). A drop down menu is also pro-vided, and there are two states that can be selected for oil pump operation, they are:

    Manual - The user has control over the running of the pump. To run the pump, simply observe the blue text indicator to ensure that the pump is not already running, and if not, then press the [On/Off] toggle button. The blue text indicator will change from Off to On. To stop the pump, press the toggle button again, and the pump in-dicator will change to Off.

    Automatic - If the pump is set to Automatic mode, the Quantum LX software program is controlling the pump operation. In this mode, if the toggle key is pressed, the mode will be changed from Automatic to Manual Mode, and the current state of the pump (digital output 3) will toggle also.

    Dual Pump Sequence (if enabled):

    Pump 1 Lead Pump 2 Lead

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    DESCRIPTION: The Current Safeties screen shows the Warn-ings and Shutdowns that have recently occurred (up to 50). When a warning or shutdown is triggered, a blue descriptive message shows on this screen. The date and time of the warn-ing or shutdown occurrence is shown to the right of its de-scription. The most recent message will appear on the top line of the screen with the oldest appearing at the bottom. When a Warning or Shutdown is logged to this screen, it will also be logged to the Safety History screen.

    The following Current Safeties screen key is provided:

    [Clear Safeties] - Selecting this key will clear all warnings and/or shutdowns from this screen This will also place a date/time stamp for the corresponding entry on the Safe-ty History screen showing that the particular Warning or Shutdown was cleared. Clearing the entry on the Current Safeties screen, will not clear it from the Safety History screen.

    To resume normal operation it will be necessary to go through the following steps:

    1. Correct the condition(s) causing the warning.

    2. Press the [ALARM SILENCE] key. (This action may precede correcting the condition(s) causing the warning). Or, go to step 3.

    3. To clear or reset the Warnings/Shutdowns screen and turn off any warning annunciation device, from the screen, press the [Clear Safeties] key. This will also clear the WARNING or SHUTDOWN message from the Operating Status screen.

    4. If the conditions causing the warning have not been corrected or a new fault has occurred, a new WARN-ING or SHUTDOWN message will appear. The Safety History screen keeps a record of the warnings and shutdowns. This information will help troubleshoot persistent operational problems.

    Refer to the Warnings/Shutdowns Message section for a list of all the possible conditions.

    When a Shutdown occurs, the screen backlight will fl ash on and off to alert an operator of the shutdown (Q4 version con-troller only). This visual indication will help get the attention of the operator in a noisy engine room environment where au-dible alarms may not be heard. Pressing any key on the keypad will clear the fl ashing backlight.

    SAFETIES - Current Safeties

    ACCESSING: Safeties Current

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    SAFETIES - Safety History

    y y

    ACCESSING: Safeties History

    DESCRIPTION: The Safety History screen shows the warnings and shutdowns that have recently occurred (up to 50 maxi-mum). When a warning or shutdown is triggered, a blue de-scriptive message shows on this screen. The date and time of the warning or shutdown occurrence is shown to the right of its description, followed by the date and time that the safety was cleared (if applicable, from the Current Safeties screen). The most recent message will appear on the top line of the screen with the oldest appearing at the bottom.

    It is possible to view the conditions that existed on the Oper-ating Status screen at the exact moment that a condition oc-curred. Use the arrow keys of the keypad to select (highlight) a warning or shutdown and then press the [Enter] key to view its associated Freeze (Operating Status) screen.

    Freeze Screen Description

    This Freeze screen provides a snapshot of the values that were current at the time of the latest shutdown. The in-formation on the Freeze screen can help the user to iden-tify the cause of a fault, which occurred when no one was present.

    The Freeze screen freezes the information of the Oper-ating Status screen AT THE MOMENT OF A COMPRES-SOR WARNING OR SHUTDOWN. The Freeze screen has the same appearance and contains the same information as the Operating Status screen. (For a description of the information presented by the Freeze screen, refer to the Operating Status screen). The Freeze screen will retain the information generated by a warning or shutdown. The last fi fty warnings/shutdowns Freeze screens are saved. This data is saved during a power outage.

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    SYSTEM STATUS - Trending - Trending Setup

    g g p

    ACCESSING: System Status Trending Trending Setup

    DESCRIPTION: This is the Trending Setup screen. Up to eight channels can be monitored in real time fashion (as the values are changing), and up to eight channels monitored as a history (long after they have happened).

    The following setpoints are provided:

    Real Time Recording Interval The time interval that defi nes how often the trending data values are recorded.

    History Recording Interval The time interval that de-fi nes how often the trending data values are recorded.

    To program this screen with the data you wish to trend, the user would highlight the Enable Real Time Trend Channel 1 (or whatever channel they wish to use), by pressing the [Tab] key. Once the box is highlighted, use the [Enter] key to cause the possible settings for the channel to appear. Use the arrow keys to scroll through the list. When the selection that you want to use has been highlighted, press the [Enter] key to select it. Once selected, the value for this channel will be automati-cally trended and shown on the Real Time Trending graph (or History Trending Graph), as well as on the Real Time Trending Data Log (Or History Trending Data Log).

    The following list is the selectable values that may be shown on this screen:

    Capacity Slide Position Volume Slide Position Suction Pressure Discharge Pressure

    Compressor Oil Pressure Main Oil Injection Pressure Economizer Pressure Filter Pressure Intermediate Pressure Balance Piston Pressure System Discharge Pressure Suction Temperature Discharge Temperature Compressor Oil Temperature Oil Separator Temperature Process/Brine Temperature Leaving Process/Brine Temperature Entering Control Oil Pressure Remote Control Setpoint Motor Current RPM Kilowatts User defi ned analog inputs #1 - #10 EZ Cool Feedback % User defi ned analog inputs #12 - #20 Manifold Pressure Remote Capacity Position Liquid Level Compressor Vibration Suction Compressor Vibration Discharge Motor Vibration Shaft Side Motor Vibration Opposite Shaft Side Motor Temperature Shaft Side Motor Temperature Opposite Shaft Side Motor Stator #1 - #3 None

  • QUANTUM LX COMPRESSOR CONTROL PANELOPERATION

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    The following screen command keys are provided:

    Upload Data Trending Files To USB Device - Pressing this key initiates an uploading of the Real Time and His-tory data fi les. These fi les can then be imported into a database such as Excel. To use this feature, simply plug a USB compatible device into the USB port of the Quantum LX. This device can be a USB cable that is connected directly to a personal computer, or a USB Flash Drive. When using a personal computer and this button is selected, a window will appear on the computer screen, showing two fi les:

    Realtimexx.csv Historyxx.csv

    The xx in both of these fi les will be replaced with the ID number of the Quantum LX. When the fi les appear in the screen window, simply right click on either fi le, and select from the menu Save Target As, and save the fi les to a convenient location. By using Windows Explorer, you can then double click on the fi le, and it will automatically open the fi le in Microsoft Excel. The data can then be used in whatever way the user would like.

    When using a USB Flash Drive, simply click on the button and the fi les will be saved to the Flash Drive. You may then take the Flash Drive and plug it into the USB port of a personal computer. The fi les may then be opened from the Flash Drive.

    SYSTEM STATUS - Trending - Real Time Trendinggggg gggg

    ACCESSING: System Status Trending Real Time Trending

    DESCRIPTION: This is the Real Time Trending screen. This screen will display in a graphical chart format, the data values as selected on the Real Time Trending Setup screen. Each of the possible eight selectable channels will be shown at the bottom of the screen, each in a different color. The color data values displayed in the chart correspond to the matching color of the trending channels at the bottom of the screen.

    A total of 900 Realtime events can be trended. Realtime events are lost upon each power cycle. The events that can be logged are set using the Trending Setup screen, shown on the previous page.

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    SYSTEM STATUS - Trending - History Trendinggggg yyyy gggg

    ACCESSING: Trending History Trending System Status

    DESCRIPTION: This is the History Trending screen. It is acces-sible from the Main Menu by pressing [System Status], then Trending, and fi nally History Trending. This screen will display in a graphical chart format, the data values as selected on the Real Time Trending Setup screen. Each of the possible eight selectable channels will be shown at the bottom of the screen, each in a different color. The color data values displayed in the chart correspond to the matching color of the trending chan-nels at the bottom of the screen.

    History trending can save up to 2000 values for each selected channel. History data is stored in Flash memory. Flash memory is non-volatile and all information is retained even if the power to the panel is lost. The interval at which the data is saved can be adjusted.

    The events that can be logged are set using the Trending Setup screen.

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    SYSTEM STATUS - Trending - Real Time Data Log

    gg gg

    ACCESSING: Trending Real Time Data Log System Status

    DESCRIPTION: This screen will display in a tabular format, the numerical data values as selected on the Real Time Trending Setup screen. Each of the possible eight selectable channels will be shown at the bottom of the screen, each in a different color. The color data values displayed in the chart correspond to the matching color of the trending channels at the bottom of the screen.

    The events that can be logged are set using the Trending Setup screen. Up to eight of these data selections may be activated at any one time. If eight items are selected, and you wish to view one more, you will fi rst need to de-activate one that is already chosen fi rst.

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    SYSTEM STATUS - Trending - History Data Log

    gg y gg

    ACCESSING: Trending History Trending System Status

    DESCRIPTION: This screen will display in a tabular format, the numerical data values as selected on the Real Time Trending Setup screen. Each of the possible eight selectable channels will be shown at the bottom of the screen, each in a different color. The color data values displayed in the chart correspond to the matching color of the trending channels at the bottom of the screen.

    The events that can be logged are set using the Trending Set-up screen.

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    SYSTEM STATUS - Maintenance

    ACCESSING: System Status Maintenance

    DESCRIPTION: Using this screen, the user can view up to nine (9) pre-programmed maintenance schedules, as well as eight (8) user defi nable maintenance schedules. Each of the user defi ned schedules may be custom named. This screen is based upon the Maintenance Schedule that is provided in the IOM manual for the specifi c compressor package.

    The usage of this screen is that the user can assign up to seventeen different areas of compressor operation that they would like to schedule routine maintenance for. As an exam-ple, the above screen shows a row labeled as Oil Analysis. The next column (Service Every) on the same row has a value of 10000 Hrs. The last column (Next Scheduled At) of this row has a value of 1000 Hrs. When the compressor is running, this time value is being clocked. After 1000 hours of compressor run time, a message will be generated and placed on the Event Log screen. This particular message will read Maintenance -- Oil Analysis. This is to notify the operator that it is time to have the Oil checked. At this point, the operator should notify the proper maintenance personnel that the appropriate maintenance be performed. The user should access the Event Screen on a regular basis (perhaps once per week) to review the information provided there.

    Once the message has been entered in the Event Log, the values for the row will be automatically updated, with new val-ues as predetermined by an internal programmed maintenance schedule, based upon the type of compressor. The values for the Next Scheduled at column are based upon the Compressor Run Time hours (shown at the bottom of this screen).

    At the bottom of the left-most column is the user defi ned Maintenance Required column. This is where custom names may be entered for the various items that the user would like to track.

    Modifying numerical values

    To modify any of the numerical boxes on this screen, sim-ply use the [Tab] key to scroll down the lists, or the [Left Arrow] key to scroll up the lists. When the box that you wish to change is highlighted, you may enter the new value using the numerical keys, then press the [Enter] key to accept the value.

    Modifying Text (User Defi ned) Boxes

    To modify any of the text boxes on this screen, simply use the [Tab] key to scroll down the lists, or the [Left Arrow] key to scroll up the lists. Once the box that you wish to change is highlighted, use the [Up Arrow] key. A new screen (Alpha) showing a numerical keypad will appear. Refer to the Alpha screen description for information on entering text messages. Press the [Enter] key to accept the text. The user may type in a custom name up to 20 characters long.

    The following additional information is provided on this screen:

    Run Hours - The value shown here is the total number of hours that the compressor motor has actually been in the running state. This value can be reset (or changed to any value from 0 to 1,000,000 Hours) from the Panel screen.

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    SYSTEM STATUS - Event Logggg

    ACCESSING: System Status Event Log

    DESCRIPTION: This screen is used to log certain messages and events that are generated through normal unit operation. Occurrences such as normal power up and power down se-quences, as well as all maintenance schedule messages (see the Maintenance screen for more information on these mes-sages).

    The messages that appear on this screen cannot be cleared, they will be stored indefi nitely.

    The user can use the arrow keys on the keypad to scroll down through the list.

    The left side of this screen is numbered for each event which has occurred. Under the Event heading, the specifi c event will be shown that caused a normal system event. In this case, Software Maintenance was performed at row 3.

    The next column shows each time the control panel was pow-ered down or powered up. This includes all cycling of power, whether intentional or not (a power failure will be shown as a power down/power up event).

    The fi nal column at the right side of the screen shows the date and the time of the event. It is very important to ensure that the correct Date and Time are set, so that accurate event log-ging can be maintained.

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    SYSTEM STATUS - VSD Energy Savingsgygygy ggg

    ACCESSING: System Status VSD Energy Savings

    DESCRIPTION: This screen provides a Slide Valve profi le for the compressor.

    This screen breaks down the total time that the com-pressor has been in the Running state since the date in the Figures Are Since row and is divided among the ten ranges listed in the left column. These ranges represent

    Slide Valve position, and the number to the right of the given range represents the percentage of time that the Slide Valve is in that range. The percentages in the right column will add up to 100%. Tabbing to the reset button will reset the percent-ages to 0% and will set the date beside the reset button to the current date.

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    SYSTEM STATUS kWh Monitoring

    gg

    ACCESSING: System Status kWh Monitoring

    DESCRIPTION: This screen allows for monitoring of the Kilo-watt hours that have been used by the compressor.

    This screen provides the Kilowatt hours that the compressor has used since the date in the Figures Are Since row. Tabbing

    to the reset button will reset the Kilowatt hours to 0 and will set the date beside the reset button to the current date.

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    SETPOINTS - Capacity Control

    p y

    ACCESSING: Setpoints Capacity Mode

    DESCRIPTION: The Capacity Control Mode 1 -4 screens are identical in appearance (with the exception that Low Suction will only appear if Suction Pressure has not been selected as the controlling mode). All setpoints having to do with Capacity Control, Autocycle, Mode Safeties and Low Suction are found here.

    NOTE: If Remote Capacity Control has been enabled, the setpoint box for Capacity Control shown in the above ex-amples will be replaced by a value in blue text that origi-nates externally. This external value will then determine Capacity Control.

    Capacity Control is setup by accessing the Confi guration screen. From that screen, the user can enable or disable any of the four possible modes, as well as select the channel that they wish to control from, and select whether the control will be Forward or Reverse acting.

    The Capacity Control screens shown above can display up to four window areas of information:

    Capacity Control Autocycle Mode Safeties Low Suction

    NOTE: If the Capacity Control mode is set to control based upon suction pressure, then the Low Suction window will appear blank, and the Mode Safeties window values will act to protect the compressor for Low Suction situations. If Capacity Control is not controlled from Suction Pres-sure, then the Low Suction window will be populated with values because the Mode Safeties window will act to monitor the Capacity Channel, but Low Suction data must also be monitored simultaneously.

    The four widow areas are described as follows:

    CAPACITY CONTROL - Capacity Control can be set to act in either Forward or Reverse control. In Forward control, as the value of the capacity control channel increases the Quantum LX increases the capacity of the compressor. In Reverse control, as the value of the capacity control channel decreases the Quantum LX increases the capac-ity of the compressor. The following setpoint boxes are provided:

    Setpoint - This setpoint is used to control the load-ing and unloading of the compressor when the Ca-pacity Control is in the AUTO (Automatic) or in REM SEQ (Remote Sequencing) modes.

    Proportional Band High - A band, measured in the units of the Capacity Control setpoint, above the Dead Band High, where proportional load or unload control is used. If the actual reading rises into this proportional band the load or unload output will be pulsed as explained below in the description about proportional band.

    Proportional Band Low - A band, measured in the units of the Capacity Control setpoint, below the Dead Band Low, where proportional load or unload control is used. If the actual reading falls into this proportional band the load or unload output will be pulsed as explained below in the description about proportional band.

    DESCRIPTION OF PROPORTIONAL BAND CON-TROL: The Proportional Band setpoint deter-mines a range of Capacity Control values where pulsed output control is used. Outside of the proportional band the output is continuously en-ergized. The length of time the output will be

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    pulsed on is proportional to the distance the actual reading is from the Capacity Control set-point. The further the distance from setpoint, the longer the output is pulsed on and the shorter the output is off. The closer the distance to set-point, the shorter the output is pulsed on and the longer the output is off. If the actual reading is midpoint from setpoint, the output is on and off an equal amount of time.

    Dead Band High - A band, measured in the units of the Capacity Control setpoint, above the setpoint at which the compressor will neither load nor unload.

    Dead Band Low - A band, measured in the units of the Capacity Control setpoint, below the setpoint at which the compressor will neither load nor unload.

    Cycle Time High - This setpoint determines the amount of time in seconds that the load or unload output is on and off, when in the upper proportion-al band. Refer to the description below about cycle time.

    Cycle Time Low - This setpoint determines the amount of time in seconds that the load or unload output is on and off, when in the lower proportional band. Refer to the description below about cycle time.

    DESCRIPTION OF CYCLE TIME: The Cycle Time setpoint determines the total amount of time for one on/off cycle, when in the proportional band. At the completion of the cycle time the actual reading and necessary response is re-evaluated. If a four second period is selected, then the fol-lowing will result:

    Proportional Distance (Ac-tual Reading is From Setpoint)

    Output Pulsed On(seconds)

    Output Off

    (seconds)

    0 0 4

    1/4 1 3

    1/2 2 2

    3/4 3 1

    1 4 0

    VFD Proportional Band - This is the value above the Capacity Control setpoint for forward action at which the output to the drive will match the maxi-mum output setpoint. Typically, proportional control alone will not permit running at the control setpoint. If the pressure is within the proportional band but not increasing the output will not increase with propor-tional control only.

    VFD Integration Time - This is the value that sets the increase of the proportional component over time.

    Example:

    Actual Value = 21 PSIGCapacity Control [20 PSIG]Maximum Output [100%]Minimum Output [20%]VFD Proportional Band [4 PSIG]VFD Integration Time [30 sec]

    With the actual pressure at 21 PSIG, the propor-tional component would be 20%. The Propor-tional Component is calculated as:

    [(Actual Value Setpoint) / PB] X (Maximum output Minimum Output).

    [(21 20) / 4] X (100 20) = 20%

    When this proportional component is added to the minimum outpoint setpoint, the total output is 40% proportionally at an actual value of 21 PSIG. It is the Integration Time setpoint which will increase the output over time without an in-crease in the actual value. As long as the actual value, (21 PSIG) does not change, the Integration Time setpoint, in this case [30 sec], will increase the output by the proportional component over every 30 seconds to drive the actual value back to the Capacity Control setpoint. If the actual value remains 21 PSIG, the Integration Time Set-point would increase the drive output to 100% over 1.5 minutes.

    The following status indicator is provided:

    Channel - Shows which analog channel is being used to control this mode, as set on the Com-pressor Confi guration screen.

    AUTOCYCLE - The following setpoint boxes are provided:

    Start - The compressor turns on when the value of the capacity control input reaches this setpoint. This setpoint is used in both AUTO (Automatic) or in REM SEQ (Remote Sequencing) modes.

    Start Delay The time in minutes that the value of the capacity control input must be above (forward) or below (reverse) the start setpoint before the com-pressor will start.

    Stop - The compressor is stopped when the value of the capacity control input reaches this setpoint. This setpoint is used in both AUTO (Automatic) or in REM SEQ (Remote Sequencing) modes.

    Stop Delay - The time in minutes that the value of the capacity control input must be below (forward) or above (reverse) the stop setpoint before the com-pressor will stop.

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    MODE SAFETIES:

    Forward Acting As the Capacity Control value drops below the capacity control setpoint, these set-points will protect the compressor by decreasing the capacity, or if necessary shutting down the compres-sor.

    Reverse Acting - As the Capacity Control value rises above the capacity control setpoint, these setpoints will protect the compressor by decreasing the capac-ity, or if necessary shutting down the compressor.

    Load Inhibit - This setpoint prevents the compressor from loading.

    Force Unload - This setpoint will actively decrease the capacity of the compressor to avoid reaching the warning and shutdown setpoints.

    Warning - If the Capacity Control value is less than (forward) or greater than (reverse) this setpoint for the Warning Delay, a warning oc-curs.

    Shutdown - If the Capacity Control value is less than (forward) or greater than (reverse) this setpoint for the Shutdown Delay, a shutdown oc-curs.

    Each of the four Modes has a set of Safeties and Low Suction Safeties. Additionally, each also has a Control Channel and is confi gured with a Control Direction of either Forward or Reverse. The Safety Setpoints moni-tor the Control Channel for their Mode.

    If the Control Direction for a Mode is set to Forward, its Safeties are activated as the Control Channels val-ue drops below the Safety Setpoints.

    Example:

    Control Channel = Process Temperature

    Control Direction = ForwardSafety Warning Setpoint = 35.0 F

    Note: For the above conditions a Warning will occur if the Process Temperature drops below 35.0 F.

    If the Control Direction for a Mode is set to Reverse, its Safeties are activated as the Control Channels value rises above the Safety Setpoints.

    Example:

    Control Channel = Discharge PressureControl Direction = ReverseSafety Load Inhibit Setpoint = 170.0 PSIG

    Note: For the above conditions a Load In-hibit condition will occur if the Discharge Pressure rises above 170.0 PSIG.

    LOW SUCTION - The following setpoint boxes are pro-vided (NOTE: This box will be empty if Suction Pressure has been selected as the Mode control channel):

    Load Inhibit As the suction pressure drops be-low this setpoint, the compressor is prevented from loading.

    Force Unload When the suction pressure reaches this setpoint, the capacity of the com-pressor will be decreased to avoid reaching the low warning and shutdown setpoints.

    Warning - If the Suction Pressure is less than this setpoint for the Warning Delay, a warning occurs.

    Shutdown - If the Suction Pressure is less than this setpoint for the Shutdown Delay, a shutdown occurs.

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    DESCRIPTION: This screen will be available if Sequencing is enabled in Compressor confi guration. The screen shown rep-resents Sys tem 1. There are additionally a System 2 and a System 3 setup screen, which are not discussed further here, as all three screens show the same layout, although they may get setup using different capacity modes. Use these screens to setup all of the necessary operating parameters for perform-ing compressor sequencing. The information from these three screens will be shown on the Sequencing Status screen.

    The following pull-down menus and setpoint boxes are shown here:

    Sequencing - Use this menu to set the current condition of System 1:

    Disabled - The compressors that are listed on this screen will not run as part of the sequencing scheme (System 1 will be ignored).

    Enabled - The compressors that are listed on this screen will run when called for as part of the sequencing scheme (System 1 will be included).

    Setpoint - Use this setpoint box to set the value that you wish all compressors within this System to maintain.

    Control Point - This is the actual value for the capacity control (as measured from the Master compressor). The master compressor is the unit with the lowest IP Address. It is to this value that the compressors will attempt to maintain. This is strictly a displayed value, and cannot be changed here.

    Minimum Run Time - This is the minimum amount of

    time that each compressor within this system will run, when called upon to do so.

    High Stage System Link - The High Stage System Link setpoint is provided to tie a system of Booster compres-sors to a system of High Stage compressors.

    The following is an informational box only:

    IP Address - A unique identifi cation number that every computer/processor that has a connection to the Internet or